don't know if you guys seen this recent, but CCTV had a program on Chinese copied version of Harpy. Huitong has a little update on it in his website. I'm sure they have modified it and upgraded the sensors and intelligence of these Chinese Harpy to make it more relevant for PLA.
what is huitong anyways, heard of it so many times.
anyways, I don't think UAVs at this stage is that effective against major powers. It is only effective against powerless countries like Afghanistan and Iraq, which currently doesn't even have air defence. Unless the plane is like the new X-47B, which costs like a trillion to develop. Even the global hawk is vulnerable; no one in the right state of mind would put something of that size into a major power's airspace.
Although I think the technology and foundation for the UAV industry is important for the Chinese, it is not urgent. I think those small hand launched Styrofoam toys are good enough.